/scratch filesystems are relatively small and expensive. ​ Unused data will be migrated out (razor) or deleted (trestles). ​

/scratch filesystems are relatively small and expensive. ​ Unused data will be migrated out (razor) or deleted (trestles). ​

-

Razor: Top level subdirectories under /​scratch/​$USER are searched for files modified less than 60 days ago. If none are found, the subdirectories are migrated to either /​storage/​$USER/​ if no name conflict or /​storage/​$USER/​scratch if there is a name conflict.

+

Razor: Top level subdirectories under /​scratch/​$USER are searched for files modified less than 60 days ago. If none are found, the subdirectories are migrated to either /​storage/​$USER/​ if no name conflict or /​storage/​$USER/​scratch if there is a name conflict. ​ This may erroneously move read-only data that doesn'​t hit the "​modified"​ flag, but that data should be in /​storage/​$USER. ​

Trestles: Top level subdirectories under /scratch (there are no $USER directories,​ only job directories) are deleted after 60 days.

Trestles: Top level subdirectories under /scratch (there are no $USER directories,​ only job directories) are deleted after 60 days.

**Please Note** razor scratch storage will be reconfigured to act like trestles within the next two months. Job scratch directories are auto-created and available now on razor the same as trestles.

**Please Note** razor scratch storage will be reconfigured to act like trestles within the next two months. Job scratch directories are auto-created and available now on razor the same as trestles.